Weil-McLain CGi Series 2 Manuel utilisateur

GOLD CGi

Series 2 Gas-Fired Water Boiler

High Altitude Conversion Kit

Instructions

Part Number 550-141-890/0300

Note to the installer

Failure to follow the limitations listed below will cause severe personal injury,

death or substantial property damage.

• Do not use this kit to convert a CGi boiler from natural gas to propane

gas or from propane gas to natural gas.

• Use only the kit specified for the CGi boiler being converted.

This conversion kit must only be installed by a Weil-McLain distributor or

other qualified technician in accordance with these Instructions and all

applicable codes and requirements of the authority having jurisdiction. Read

these instructions completely before beginning the installation. If the

information in these Instructions is not followed exactly, a fire, explosion,

carbon monoxide emission or other hazardous conditions can result,

causing severe personal injury, death or substantial property damage. The

qualified technician performing this work assumes responsibility for this

conversion.

Hazard definitions

The following terms are used throughout these Instructions to bring attention to the presence

of hazards of various risk levels or to important information concerning the life of the product.

Indicates presence of hazards that will cause severe personal injury, death

or substantial property damage.

Indicates presence of hazards that can cause severe personal injury, death

or substantial property damage.

Indicates presence of hazards that will or can cause minor personal injury

or property damage.

Indicates special instructions on installation, operation or maintenance that

are important but not related to personal injury or property damage.

2,000 to 10,000 feet

Part Number 550-141-890/0300

GOLD CGi Series 2 Gas-Fired Water Boiler

Conversion instructions

For the boiler to operate correctly

at high altitude, you must replace

the main burner orifices and the air

pressure switch with the parts

supplied in the appropriate

conversion kit (selected by altitude

and boiler model). Failure to do so

could result in severe personal

injury, death or substantial property

damage.

For your safety, turn off electrical

power supply and turn off external

gas supply valve before attempting

to work on the boiler. Failure to

comply could result in severe

personal injury, death or substantial

property damage.

1. Using a 7

/16" open-end wrench, remove the burner

orifices from the manifold.

2. Apply a small amount of pipe dope to each of the

new (conversion kit) orifices and install in the

manifold using the 7

16" open-end wrench. Make sure

the orifices are aligned correctly, not cross-threaded

in the manifold tappings. Do not over-tighten

orifices.

Use only pipe dope compatible with

propane gas, even if boiler is to be

operated on natural gas. Failure to

comply could result in severe

personal injury, death or substantial

property damage.

Refer to Table 1 and Table 2 on page

3 for the conversion kit components.

Verify that you have the correct

orifice size and quantity for the

altitude and boiler model.You must

replace all burner orifices with the

correctly-sized conversion kit

orifices. Failure to do so will result

in severe personal injury, death or

substantial property damage.

3. Affix“High Altitude Conversion Label”above boiler

rating label. Affix “Consumer Protection Label”

above the boiler CP label.

4. Remove tubing and wires from existing pressure

switch. Remove pressure switch and replace with

pressure switch in kit (Refer to Figure 1):

a. Reconnect white hose to left side barb on

pressure switch.

b. Reconnect red hose to right side barb on

pressure switch.

c. Reconnect the two red wires to the pressure

switch.

5. Follow CGi Series 2 Boiler Manual “Start-up” and

“Operation” procedures to assure the boiler is now

operating properly after conversion parts are

installed.

Figure 1 Pressure switch connections

White

Flue collector

Interior

panel

Rear

panel

Side

panel

Red

73001

Part Number 550-141-890/0300 3

High Altitude Conversion Kit Instructions

Parts

Table 1 Natural gas conversion kit Table 2 Propane gas conversion kit

Boiler

model

number

Altitude

(feet) Kit part

number Main

burner

orifices

Air

pressure

switch

setting

Qty Size

CGi-25

2,000 to 4,999 510-811-840 2#45

1.22" w.c.

5,000 to 6,999 510-811-841 2#46

7,000 to 8,999 510-811-842 2#47

9,000 to 10,000 510-811-843 2#48

CGi-3

2,000 to 4,999 510-811-845 2#38

1.22" w.c.

5,000 to 6,999 510-811-846 2#40

7,000 to 8,999 510-811-847 2#41

9,000 to 10,000 510-811-848 2#43

CGi-4

2,000 to 4,999 510-811-850 3#38

0.95" w.c.

5,000 to 6,999 510-811-851 3#40

7,000 to 8,999 510-811-852 3#41

9,000 to 10,000 510-811-853 3#43

CGi-5

2,000 to 4,999 510-811-855 4#38

0.80" w.c.

5,000 to 6,999 510-811-856 4#40

7,000 to 8,999 510-811-857 4#41

9,000 to 10,000 510-811-858 4#43

CGi-6

CGi-7

CGi-8

2,000 to 4,999 510-811-860 7#38

0.60" w.c.

5,000 to 6,999 510-811-861 7#40

7,000 to 8,999 510-811-862 7#41

9,000 to 10,000 510-811-863 7#43

Note: Each kit also includes (1) High Altitude Label, (1) Consumer

Protection Label and (1) Instruction Sheet

Boiler

model

number

Altitude

(feet) Kit part

number Main

burner

orifices

Air

pressure

switch

setting

Qty Size

CGi-25

2,000 to 6,999 510-811-875 2#55 1.22" w.c.

7,000 to 10,000 510-811-876 2#56

CGi-3

2,000 to 6,999 510-811-878 2#53 1.22" w.c.

7,000 to 10,000 510-811-879 2#54

CGi-4

2,000 to 6,999 510-811-881 3#53 0.95" w.c.

7,000 to 10,000 510-811-882 3#54

CGi-5

2,000 to 6,999 510-811-884 4#53 0.80" w.c.

7,000 to 10,000 510-811-885 4#54

CGi-6

CGi-7

CGi-8

2,000 to 6,999 510-811-887 7#53 0.60" w.c.

7,000 to 10,000 510-811-888 7#54

Note: Each kit also includes (1) High Altitude Label, (1) Consumer

Protection Label and (1) Instruction Sheet

4Part Number 550-141-890/0300

GOLD

CGi Series 2 High Altitude Conversion Kit Instructions

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